Power Quality FAQ | APF, SVG & Harmonic Mitigation Questions

Q: Why is maintaining a high Power Factor (PF) critical for industrial users?

Technical Value: Power factor reflects how effectively electrical power is utilized. Improving power factor can reduce current in the distribution system, helping lower losses in cables and transformers and release available transformer capacity.

Utility Requirements: Many utilities apply power factor requirements or reactive power charges depending on local regulations. Maintaining an appropriate power factor can help reduce unnecessary reactive power costs and support more efficient use of the electrical system.
Q: What are the potential risks of Harmonics in modern industrial production?

Reliability Challenges: Harmonics are waveform distortions commonly generated by nonlinear loads such as variable frequency drives (VFDs) and switching power supplies. Excessive harmonic distortion can increase losses, cause abnormal equipment heating, interfere with sensitive control systems, and shorten the service life of electrical equipment.

Safety Risks: Under certain system conditions, harmonics may also contribute to resonance and increase electrical stress on capacitor banks and other compensation equipment.
Q: Why are Voltage Sags considered the "Hidden Killers" of precision manufacturing?

Phenomenon Description: A voltage sag is a short-duration reduction in supply voltage, commonly caused by grid faults, large-load startup, or disturbances within the power system.

Operational Impact: Even a brief voltage sag may trigger protection devices or cause sensitive production equipment to shut down. In industries such as semiconductor and pharmaceutical manufacturing, this can result in production interruptions, extended recovery time, and material losses.
Q: How does the LSVG Hybrid Compensation Device balance performance and cost efficiency?

Configuration Logic: The LSVG combines the fast, continuous regulation capability of SVG modules with capacitor-based reactive power compensation.

Value Proposition: By coordinating dynamic and capacitor-based compensation, the system can provide fast response while reducing the overall cost of reactive power compensation, making it suitable for applications that require both performance and cost efficiency.
Q: When is a supercapacitor-based DVR suitable for industrial voltage sag protection?

Application Focus: A DVR is designed specifically to mitigate short-duration voltage sags and maintain stable voltage for sensitive loads. Compared with solutions intended for long-duration power backup, it can provide targeted protection for industrial processes affected mainly by voltage disturbances.

Energy Storage Advantage: Supercapacitors offer high cycle life, fast charge and discharge capability, and relatively low maintenance requirements, making them suitable for frequent short-duration compensation events.
Q: How do TCD Thyristor Switches perform under rapidly changing loads?

Technical Features: TCD thyristor switches use zero-crossing switching technology to achieve fast capacitor bank switching while minimizing inrush current and switching transients.

Application Scenarios: They are suitable for rapidly fluctuating loads such as welding equipment and elevator systems, where frequent and fast reactive power compensation is required.